. Fix the build with gcc 3.4 part 2/2. Don't use the flag
-fmemoize-lookups as gcc 3.4 doesn't understand it. 
. Use CXX and CXXFLAGS for compiling C++ code, not CPP and CPPFLAGS.
Also, respect the setting of CXX and CXXFLAGS.
PR: 71516 
Submitted by: Damir Kiramov <email@example.com>